Key releasing means



Nov. 3, 1936. F. A. HosAcK KEY RELEASING MEANS 2 Sheets-Sheet 1 Original Filed Aug. 15, 1931 wNWN INVENTOR Zia/1m? 1i Harm??? 1936 F. A. HOSACK KEY RELEASING MEANS Original Filed Aug. 15, 1931 2 Sheets-Sheet 2 NQ rlllllV/lldV/lli/Il! E WWI I INVENTOR fifliglS A [fwd/1E ATTORIZEYS Patented Nov. 3, 1936 UNITED STATES PATENT OFFICE 557,293. Divided and this application December 12, 1933, Serial No. 701,970

7 Claims.

This invention relates to calculating machines and particularly to that class in which totalling and listing operations are carried on in conjunction with the calculating functions. In my 5; Patent No. 1,823,859 issued September 15, 1931, I have disclosed locking devices controlling the actuator bars to prevent the printing of ciphers to the left of the registering values in adding and subtracting operations. In this patent the 10 bar locking devices are disclosed as controlled to provide an extra increment of motion for the actuator bars after printing has been effected so that in the return movement of the bars this increment of motion may be utilized to effect 115 transfer operations, as disclosed and claimed in my copending application Serial No. 701,283, filed December 7, 1933.

The present application relates to mechanisms for effecting automatic release of the numeral key locks, totalling key locks, bar locks and other devices controlling the actuator bars by means of mechanisms controlled and operated by the actuator bars themselves.

Other objects and advantages of the invention will be apparent upon consideration of the following description and appended claims when read in conjunction with the appended drawings in which:

Fig. 1 is a sectional elevation at the left of the 39 column of keys of highest denomination and shows the various parts in non-operated position;

Fig. 2 is a sectional view on the line 2--2 of Fig. 1 illustrating the manner in which the actu- 5 ator bars cooperate with the key stems, and also shows the side frames of the machine;

Fig. 3 is a. sectional view on the line 3-3 of Fig. 1 and shows the bar locks for the actuator bars;

.49 Fig. 4 is a sectional view on the line 4-4 of Fig. 1 and shows the zero locks for the actuator bars;

Fig. 5 is a fragmentary sectional elevation at the right of the column of keys of lowest denomi- 45 nation;

Fig. 6 is an enlarged view of part of Fig. 1 and shows certain of the mechanism for controlling and operating the actuator bars;

Fig. 7 is an enlarged perspective view showing 59 the key-stem lock releasing devices;

This application is a division of my copending application Serial No. 557,293 filed August 15, 1931, now Patent No. 1,938,907.

In Fig. 1, the respective keys I to 9, inclusive,

.55 of the various columns making up the keyboard are supported and guided in horizontally spaced plates to, H and I2. Each key is held in its normal position by a compression spring 21 acting between plate I! and a seat 28. Actuator bars 13, of which there is one for each column 5 of keys, are provided adjacent their top and bottom edges with laterally projecting stops l4, l5,

l6 and I1 adapted to cooperate with a projecting portion 35 or 36 (Fig. 2) of a certain key of the column with which the bar is associated so that 10 when the key is depressed and the bar is moved, the stop engages the projecting portion of the key to limit the operation of a printing segment 84 by the actuator bar to a number of increments of movement corresponding to the value of the depressed key. The arrangement of the projecting portions on the various key stems and their relation to the stops on the actuator bar is more fully described in my prior Patent No. 1,823,859.

At one side of each column of key stems is a key stem lock 29 having trunnions 29w journalled in the plates and 3|, so that it can swing into and out of engagement with laterally positioned depressions or notches 29b and 290 formed in the key stems adjacent their upper ends.

Near the forward end of each actuator bar I3 is a slot 38 for receiving a bar lock for the actuator bar and a slot 39 for receiving a zero lock for the actuator bar as shown in Fig. 5. Referring to Fig. 3, the bar locks consist of a series of members 40, 4|, 42, 43, one for each actuator bar, pivotally mounted on one side of the plate 38 at 44, 45, 46, 41. When no keys are depressed the bar locks depend perpendicularly, as indicated by the position of 40, with solid portions of their lower ends in the slots 38 of the actuator bars and consequently all the actuator bars are locked against movement. Each bar 40 lock is provided at its lower end with a slot 48, 49, 50, 5!. Laterally projecting members such as pins 52, 53, 54, 55, are carried by the bar locks and are engageable by arms 56, 51, 58, 59, secured to the key-stem lock trunnions 29w, which extend through plate 30, to move the bar looks so that their slots register with actuator bars for the related column topermit their movement.

The lower ends of all the bar locks are in abutment so that when a key in any column to the left of the first column is depressed the unlocking movement of the actuator bar lock in that column causes the locks for all columns to the right to move to unlocking position, while the bar locks to the left remain in looking position. A single spring 60 associated with the right-hand bar lock 43 biases all the bar looks into locking relation with the slots 38 of the actuator bars.

The zero locks for the actuator bars comprise members 64, 65, 66, 61 (Fig. 4), pivoted on the other side of the plate 30 at 68, 69, I0, II. The zero locks are biased by individual springs I2 so that their lower ends rest in the slots 39 of the respective actuator bars. The slot 39 in each actuator bar is wider, as shown in Fig. 5, than the zero look by an amount equal to the distance the actuator bar must travel to bring the printing segment 84, to be presently described, into position to print a zero.

The zero locks normally prevent the actuator bars I3 moving more than enough to bring the printing segments to zero position. Adjacent their lower ends the zero locks are provided with projections such as pins 80, SI, 82, 83, adapted to be acted upon by arms I6, I1, 18, I9, carried by the key-stem locks 29 of the respective columns so that when a key is depressed in a column the zero lock for the corresponding actuator bar I3 is moved out of the slot 39 in the bar permitting the bar to be moved to index the printing segment 84 in accordance with the value of the depressed key.

The bar looks and zero locks, when released, are held out of locking relation position by the arms 55, etc., or I6, etc., carried by the key stem locks acting against the pins 52, etc., or 80, etc. This is because when a key is depressed the key-stem lock 29 is moved out of the notch 29b in the key stern and engages the notch 290 which is of lesser depth so that the key-stem lock does not return to its normal position until released from looking relation with the key stem.

Referring to Figs. 2 and 7, a bar 29d having a slot 29c for each key-stem lock 29 is provided for releasing the key-stem locks from the key stems, so that the depressed keys may be restored by their springs 21, and for moving the arms 56, etc. and 16, etc., associated with the pins on the bar locks and Zero locks, respectively, to permit locks which have been released to be restored to locking position by the springs associated therewith. The bar 2961 is biased to normal position by a spring 29 so that the notches 29c are normally disposed to permit movement of any key-stem lock on depression of a key in the corresponding column.

Bar 29d is connected to one end of a lever 29h pivotally mounted at in the plate II. Lever 29h carries at its other end a pivotally mounted dog 2%, extending into the path of a movement of a cam I3a on the actuator bar I3 of lowest denomination. The dog 29k carries a pin 25m adapted to limit the movement of the dog about its pivot 293 on lever 2971, the arrangement being such that on rearward movement of the actuator bar I3 cam is engages and pivots the dog without operating lever 29h while on forward movement of the actuator bar cam I3a engages and cams the dog 29k laterally away from bar I3, thereby operating lever 29h and moving the bar 29d to the right for causing release of the keystem locks 29. This arrangement may be duplicated for as many actuator bars as deemed de-- sirable. In any event the above described mechanism is provided for the actuator bar associated with the column of lowest denomination since this bar moves, at least one step in each direction, whenever a key is depressed in any column.

The main shaft I5I is connected by lever I5Id,

link I5Ic and crank I5Ib to shaft I03 carrying restoring frames I04 engaging the actuator bars with pins 405 for moving them forwardly under the influence of spring I5Ic when they are released.

The actuator bars have lugs I3d projecting through elongated slots in the plate I2 and connected to one end of springs I30 for moving the actuator bars rearwardly, the other ends of the springs being connected to the plate at I3b. At their rearward ends the actuator bars I3 have racks 31 engaging toothed portions 85 of the printing segments 84, preferably mounted on a common shaft 84a with proper provision for retaining them in alignment with the actuator bars. The printing segments 84 are illustrated as having printing portions 86 on their edges, the printing portions 86, as shown, being provided with eleven divisions, one blank and the others comprising type from to 9. A platen 88 and a ribbon 81 act in conjunction with the type on the segments 84 to effect printing, in any suitable way.

A bell crank BI, Fig. 3, pivoted on plate 30, engages the bar lock 40 at the extreme left and is connected by a link Sla to one end of a lever 6Ib, Figs. 1 and 6, pivotally mounted on plate I2. The other end of lever lb extends adjacent restoring frame shaft I03 which is provided with a cam or stud I030. Stud I030 is positioned for engaging and rocking lever Blb to cause release of all bar looks after printing has taken place, to permit the previously locked actuator bars to be moved one increment rearwardly by springs I3c. This increment of rearward movement is provided to insure that all bars are positioned for effecting in a suitable manner such transfer operations as may be necessary.

The accumulator pinions 90 carried by pivotal frame 92 and operatively associated with the corresponding actuator bars I3 through the operative connection afforded by the meshing toothed portions 85 of segments 84, are actuated in the manner described in the aforementioned application Serial No. 701,283. which also describes the transfer mechanism illustrated herein.

A total key 14 and subtotal key I5 are guided in the plates I0 and II. A key-stem lock 14a, Fig. 4, similar to locks 29 for the numerical keys is provided for engaging notches in the keys I4 and 15 to maintain the latter in depressed position until the lock is released, whereupon the keys may be raised by their springs. Key-stem lock 14a is operatively connected by link I40. Me with locks 29 for the numeral keys so that it is operated therewith. Total key 14 is connected to rock a shaft 74h extending transversely of the machine for acting through links I41, I41; and Mp to raise slides 62 carried by frames 92 for causing disengagement of the numeral pinions from operative relation with the actuator bars at the proper times in subtracting and totaling opcrations,as disclosed in mycopending applications Serial No. 577,293 and Serial No. 701,969, filed December 12, 1933.

The total key has a lug 14g positioned above a lug 750 on the subtotal key, so that depression of the total key also effects depression of the subtotal key. The subtotal key is arranged to rock a shaft extending transversely of the machine and connected by links 15], 15h to arms I29b on a shaft I29 on which cipher locks I34 are pivotally mounted. Cipher locks I34 are controlled by lc vers I24, operable by pinion cams 9|, and by latches I to prevent cipher printing to the left of a significant figure in totaling operations as described in my copending application 557,293, The arrangement is such that depression of the subtotal key, or depression of the total key acting through the lugs Mg and 150 on the total and subtotal keys, causes movement of the links 15 and 15h rearwardly moving shaft I29 upwardly in its guides, and this upward movement causes the ends of the cipher locks I34 to move into position to be engaged by shoulders I33 on the actuator bars.

The links 75 and 15h are connected to bell cranks 15k, one of which is pivotally mounted adiacent each frame 92. The bell cranks 1570 are also connected to members IEZ each having at their upper ends a seat 1511 resting beneath one of the levers S8. The members 751 are adapted on operation of the subtotal key, either directly or from the total key, to raise the members 157i and turn levers 98. This movement of levers 98 is only enough to cause movement of the ends IOlc of transfer levers l0! sufficiently to disengage them from the stops 102 on actuator bars l3 and thereby permit movement of frames 92 to cause engagement of pinions 9a with the toothed parts of segments 84. However, this movement of transfer levers Hll is not great enough to move the ends Hill) of the levers from the paths of the raised portions 9lb of cams 9i and thus the transfer levers remain effective to serve as zero stops for the pinions Q9. The links 151 and 15h are also provided with studs 151' for engaging the arms 63a of the bell cranks pivoted on the frame of the machine at 631). The other arm 63a of each bell crank pivotally supports a latch tripping member 921 adapted on rocking of the bell crank to engage a pin 92g on the pinion frame latch Mb to move the latter about its pivot out of latching relation with the associated pinion frame 92. A spring GM is connected to trip 92 and pivot 53b for restoring trip 92 and the bell crank.

The lug 150 on subtotal key 15 is adapted to engage and operate a bell crank 13a associated with the zero locks 64, etc. (Fig. 4). A suitably guided bar 13, operable by bell crank 13a, and having slots 13b, into which the pins 89, etc., carried by the zero locks extend, is provided for simultaneously releasing all the zero locks. Key 15 also has a lug 15a for operating bell crank 6| which pertains to the bar locks 40, etc. (Fig. 3). Thus, operation of subtotal key 15, directly or from total. key M, efiects simultaneous release of the bar locks and zero locks for all the actuator bars.

Other elements which would be embodied in a complete machine to operate in conjunction with a subtracting lever associated with the levers 98b. and total and subtotal keys l4, 15 for registering and listing functions are disclosed in my prior application Serial No. 557,293 but are omitted herein to simplify the present disclosure.

The operation is as follows:

When a key in any column is depressed the key-stem lock 29 for that column is moved out of engagement with the notch 29b of the key stem. The arm 51, for example, moves with its key-stem lock and acts on pin 53 on the bar lock ll moving the slot 49 intoalignment with the actuator bar I3 to permit its movement. This is illustrated in Fig. 3, where depression of a key in the fifth column from the right has caused the key-stem lock 29 of that column to move arm '51 releasing bar lock Al for actuator bar l3 of the fifth column. The bar lock 4| has cause-d the release of the bar locks for the actuator bars of all columns to the right. It should be noted that the bar locks 40 for the columns to the left of the fifth column remain in looking position. It should also be noted that unless a key is depressed in a particular column the related keystem lock 29 is not released, the pins 54, on the bar lock moving therewith away from the arms 58, 59, carried by the key-stem lock. This is illustrated in the first, third and fourth columns, while the position of the arm 59a indicates that a key has been depressed in the sec ond column also.

The arm 11 also moves with the key-stem lock 29 for the fifth column and acts on the pin 85 on the zero lock for that column moving zero lock 65 out of the notch 39 in the actuator bar 13. As the key is depressed, the key stem portion between notches 29b and 290 acts on key-stem locks 29 to cause the bar locks and zero locks to be moved slightly beyond released position by arms 51, 59m and ll, '58. Springs 69 and 12 act on the right bar lock and the released zero locks to move arms 51, 59a, and 1T, 18, through studs 53, 55a, etc. and 8|, 82 to move the key-stem locks suiiiciently to engage notches 290 to hold the keys in depressed posi tion, the bar locks and zero locks being held in release-d position by the arms 5?, etc., and Il etc., respectively.

When the operating handle secured to the main shaft I5i is moved forwardly, the restoring frame shaft I03 is moved counterclockwise carrying the restoring frames I84 and permitting springs I30 to move'the actuator bars rearwardly. The actuator bars for columns in which keys have been depressed, having their bar and zero locks released, move rearwardly until a stop, such as M, on these actuator bars engages a projection of the key stem for limiting the movement of the printing segments by racks 31 to an amount corresponding to the value of the depressed keys. The combination of the bar locks and the zero locks insures the printing of zeros to the right of any key which is depressed and inhibits the movement of any actuator bars to the left of that key, as disclosed in my prior Patent 1,823,859.

The printing is effected in a manner readily f understood.

After printing has been effected the studs I630 moving with restoring frame shaft I03 move lever 5 lb about the pivot and acting through link em turn bell crank Bl. crank 6| moves all the non-released bar locks i about their pivots to released position with the slots at lower ends of the locks in alignment with the actuator bars l3. The previously locked actuator bars, those to the left of the fifth column under the conditions assumed above, are then moved rearwardly by their springs he a single increment, the movement of the bars being limited by the engagement of the rearward end of slots 39 with the zero locks, this arrangement insuring that all bars are movable forwardly at least the one increment that may be required to effect transfers or release the key stem locks, etc., as will be described.

When the operating handle is released the main springs I5le, which were tensioned during the rearward movement of the restoring frames i0 1, turn restoring frame shaft Hi3 carrying frames EM therewith to engage the actuator bars for moving them forwardly.

This movement of bell On rearward movement of the actuator bars to index the printing segments, cams I3a thereon engaged the dogs 29k, Fig. 7, pivoting the latter about the pivots 29Z without effecting move-- ment of the levers 29h and bar 28d. However, as the actuator bars which have cams move forwardly to normal position each cam engages the related dog 2970. As pins 291i prevent pivotal movement of dogs 2870 by cams I3a on forward movement of the bars I3 the dogs are cammed sideways away from the bars and act to rock levers 29h about pivots 29f. As a lever 29h is turned about its pivot it moves the bar 29d so that the shoulders of the notches 23.9 engage the key-stem locks 28 moving the latter from engagement with the notches 29c of the key stems. The springs 21 associated with the depressed keys return the latter to normal posi tion.

As the cam I 3a moves beyond and from engagement with the dog 29k the bar 29d, is returned to normal position by the spring 297. On return of the bar 29d the shoulders of the notches 29c move away from the key-stem locks 29. The spring 60 associated with the bar lock of lowest denomination, acts to pivot all the released bar looks so that the slots 48 etc. are moved from registration with the actuator bars and the solid portions of the bar locks are moved into the notches 38 of the actuator bars to lock the latter in normal position. The individual springs 72 associated with the released zero locks move the zero looks so that their ends are positioned in the notches 39 in the actuator bars. The keystem locks again engage the key stem notches 29b as the arms 56, etc., and 16, etc., are moved by the pins on the bar locks and zero locks.

In the event that the bar locks and zero locks are released before all .of the actuator bars have moved to normal position, the springs associated with these looks bias them against the actuator bars so that when the actuator bars have moved to position the notches 38 and 39 in alignment with the bar locks and zero locks the latter will enter the notches to lock the bars in normal position.

When total key I4 is depressed the shaft 74h is turned and acts through links 141 and 7411- to move the slides 62 upwardly. The pins 62b near the end of slides 62 and studs I52 on the links 15 and 15h act on the bell cranks 63 for operating the latch tripping members 92 f to release latches 92b to permit meshing pinions 90 with toothed segments 84 during the rearward movement of the actuator bars.

It will be remembered that the total key has :1 lug 14g which overlaps a lug I50 on the subtotal key 15, so that depression of the total key also affects depression of the subtotal key. Consequently, when key 14 is operated the links 15f and 15h are operated through shaft 15c and act on the arms I29?) on shaft I29 to move the cipher locks I34 upwardly so that their upper ends are positioned adjacent the shoulders I33 on the actuator bars to prevent undesired cipher printing in totalling operations, as disclosed in my earlier application Ser. No. 557,293.

The movement of links 15f and 159 also turns bell cranks 15k raising the members I51. Since the seats I511 at the upper ends of these members rest beneath the levers 98, the latter are turned about their pivots. As a result, the bail IOId acts to move the ends I Me of transfer levers IOI away from the stops I02 on the actuator bars so that frames 92 may move for meshing pinions 90 with members 85 although some bars I3 are locked against movement by the related cipher locks I34. The ends IOIb are moved away from cams 9| but the movement of levers 98 by members I5l is not sufficient to move the ends Hill) of the transfer levers from the paths of movement of the raised portions SI?) of cams 9|. As a result, the transfer levers IOI remain effective to serve as zero stops for pinions 90.

Depression of subtotal key 15 by total key 14 also acts through studs 15c and 15a on the subtotal key to move the bell cranks 6| and 13a (Figs. 3 and 4), so that all of the bar locks and all of. the zero locks are simultaneously released to permit the actuator bars to move in accordance with the amount entered in the numeral pinions 98.

When the operating handle connected to the main shaft is moved forwardly the restoring frame shaft I03 is turned and the cams I36 carried therewith to permit the springs I38a to move the rollers I28 from engagement with the pinion frames 92. The pinion frames 92 are thereupon moved by the springs 92a so that the numeral pinions 90, move from engagement with the pinion locks 95 into engagement with the toothed portions 85 of the printing segments 84.

When the shaft I 03 turns the restoring frames I34 move therewith, permitting the actuator bars I3 to be moved rearwardly by their springs I3c. As the frames I04 move and prior to engagement of pinions the released bars I3 index the corresponding printers in zero printing position. This insures printing of zeros to the right of pinions having figures therein, The actuator bars I3 for columns in which numbers have been entered move rearwardly to an extent determined by the number entered in the numeral pinions, the movement of the pinions and the indexing of the printing segments being limited by the engagement of the raised portion 9Ib of cams 9| with the ends I 0Ib of the transfer levers IOI which act as zero stops for the pinions. The actuator bars I3 for columns to the left of the amount on the numeral pinions are held against I any movement as the related cipher locks I34 have their upper ends positioned in the paths of movement of and are held firmly against the shoulders I 33 on these actuator bars as a result of operation of the total key.

After the amount on the numeral pinions 90 has been transferred to the printing segments 84, the platen 88 is moved through links 880 against the printing segment to effect printing of the total. After printing has taken place in a totalling operation the pinion frames are rocked forwardly so that the pinions 90 demesh from the toothed segments 85 and engage the pinion locks 95.

When the operating handle on the main shaft is released and moves rearwardly the studs I05 on the restoring frames I04 move away from the latches 921), which engage the pinion frames 92 to hold the pinions demeshed during the forward movement of the actuator bars by the restoring frames I04. As the restoring frames I04 move the actuator bars I3 to normal position the racks 31 move the printing segments 84 so that the blank spaces are again presented at the printing line. Cams I36 move levers I38 to further lock pinions 90 engaged with their looks 95. In the final movement of the actuator bars, key-stem locks, bar locks and zero locks are restored to locking relation with the actuator bars, all as previously described. The movement of the bar 29d to release the key-stem locks, bar locks and zero locks also acts through links 140, 14c to elfect releasing of the key-stem locks Ma for the total key and subtotal key which are restored to normal position by their springs. On restoration of the subtotal key the links 15] and 1571. move the cipher locks and members 'I5Z to normal position.

Springs 98a restore levers 98 and cause the bail I Ole to move the ends ifllb of transfer levers IOI against cams 9| and the ends iillc into engagement with the stops I62 on the bars l3.

On restoration of total key 14 the slides 62, latch trip 92 1, etc., are restored to normal position on movement of the links lfil and 15m. The springs l3l, I32 associated with the cipher locks and the cipher lock levers also act to restore the latter to their normal position.

When the subtotal key is depressed to take a subtotal, the operation is as described above, except that slides 62, being connected to the total key but not to the subtotal key, are not moved upwardly and numeral pinions 90 are not demeshed from the toothed portions 85 of the sectors 84 after printing has taken place. Consequently, during the restoring operation of bars [3, the printing sectors and the pinions are operated by the racks 31, the printing segments being restored to blank position and the numeral pinions being operated to reinsert the amount in the pinions. At the end of the rearward stroke of the operating handle the rollers i228 engage the pinion frames 92 and effect demeshing of the pinions 90 from the toothed portions 85 of segments 84, as in addition. The locks for the key-stem of the subtotal key 15 is released by the operation of links 140, Me by the numeral key-stem lock 29 as the latter is actuated by restoration of the actuator bars to normal position, as described above.

It should be noted that in totalling and sub-- totalling operations the latches 92a are released immediately upon operation of the keys but the pinions do not become operatively engaged with the actuator bars in their rearward stroke until the active printing members are indexed to zero positions because of the control of the pinion frames by the restoring frame shaft acting through levers I38.

Inasmuch as the locking ends Hllc of the transfer levers normally engage the bar stops I02 the subtotal and total keys act through levers 98 to raise the parts lOlc so that actuator bars held in normal position against movement, by their cipher locks [34 in totalling and subtotalling, do not act through bar stops I02 to prevent rearward movement of frames 92 to carry pinions 90 to operative relation nor restrain the full forward movement of bars I3 to normal posi tion for releasing the various key-stem locks.

It should also be noted that the release of the key-stem locks for the numeral and totalling keys, the return of the bar locks, zero, latch trip 92] and the slides which control the demeshing of the pinions in certain operations, are all controlled by the actuator bars themselves as the latter are restored to normal position.

It should be understood that many of the parts illustrated are shown in a form chosen purely for simplicity of illustration and to provide a complete showing of related parts and do not necessarily represent preferred embodiments. For example, the mechanism for moving the platen frame to effect printing and for moving it away from the type faces after printing is illustrated only for completeness of description and may be replaced by various well known types of printing mechanisms.

As there are many changes and variations which may be made in the form of my invention without departing from the spirit thereof, I desire to include all such variations and changes within the scope of the appended claims.

I claim:

1. In a calculating machine having accumulating pinions, movable actuator bars operative- 1y associated with said pinions for actuating the latter, and depressible keys arranged in series in columns corresponding to the respective actuator bars; individual locking means for each column of keys acting to hold any key of the respective column in depressed position for limiting the movement of the related actuator bar; means extending transversely of said columns of keys and operatively engageable with each of said locking means for releasing the latter; and means oper able by one of said actuator bars for actuating said releasing means to release the locking means for all columns of keys.

2. In a calculating machine having accumulating pinions, movable actuator bars operatively associated with said pinions for actuating the latter, and a plurality of series of depressible keys arranged in columns corresponding to and coopcrating with said bars for limiting their move-- ment; means for locking any key of said series in depressed position; locking means controlling the movement of said bars; means operated by said key locking means for releasing said bar locking means, and means operated by one of said released bars for releasing a plurality of depressed keys in a plurality of columns.

3. In a calculating machine having accumulating pinions, movable actuator bars operatively associated with said pinions for actuating the latter, and a plurality of series oi depressible keys arranged in columns corresponding to and cooperating with said bars for limiting their movement; means for locking any key of said series in depressed position; locking means controlling the movement of said bars; means oper able by said key locking means for moving and holding said bar locking means out of locking relation to said bar, and means operated by one of said released bars for releasing a plurality oi depressed keys in a plurality of columns.

4. In a calculating machine; accumulating pinions; movable actuator bars operatively associated with said pinions; a series of depressible keys cooperating with each actuator bar for limiting its movement; individual locking means for each column for holding any key thereof in depressed position; individual bar locks for holding said bars in normal position against movement; means controlled by the keys of the respective series for releasing the bar locks for the corresponding actuator bars; means for releasing the bar locks corresponding to the actuator bar of lowest denomination to permit movement thereof although a key corresponding thereto has not been depressed; means operatively engageable with the key locking means of all columns for releasing the latter; and means operable by the actuator bar of lowest denomination for actuating said releasing means to release the depressed keys of all columns.

5. In a calculating machine having accumulating pinions, printing members, movable actuator bars for operating said members and pinions, and a plurality of series of depressible keys each cooperating with an actuator bar to control its movements to operate the corresponding printing member and pinion in accordance with the value of a depressed key; individual bar locks engaging said bars to prevent movement thereof; individual zero locks engageable with said bars to limit the movement thereof to a single increment for indexing the corresponding printing member in zero printing position upon release of the related bar lock; means for releasing said bar lock although a key associated with the related bar has not been depressed; locking means, one for each series of keys, engaging said keys for holding .a depressed key in depressed position; means carried by said key locking means and operable therewith for releasing said bar lock and said zero lock from engaging relation with said bar and holding them in released position for enabling operation of said printing member and accumulating pinion by said actuator bar in accordance with the incremental value of a depressed key; means operable by one of said actuator bars for releasing said key locking means to free all of said bar locks and zero looks from the restraining action thereof; and means operable on release of said bar lock and zero locks from the restraining action of said key locking means for moving them into locking relation with said actuator bar.

6. In a calculating machine having accumulating pinions, printing members, movable actuator bars for operating said pinions and members, and a plurality of series of depressible keys each cooperating with an actuator bar for controlling its movements to operate said pinions and members in accordance with the value of a depressed key; individual bar locks engaging said bars to prevent movement thereof; individual zero locks engageable with said bars to limit the movement thereof to a single increment for indexing the corresponding printing member in zero printing position on release of the related bar lock; means operated by the keys of the respective series on depression thereof for releasing the bar locks and zero locks for the corresponding actuator bars; means for releasing the bar lock corresponding to the actuator bar of lowest denomination to free said bar for movement to index the corresponding printing member in zero printing position under control of the related unreleased zero lock although a key corresponding to said bar has not been depressed; locking means for each key series to hold any key thereof in depressed position; means operatively engageable with all of said key locking means for releasing the latter; and means operable by the actuator bar of lowest denomination for actuating said releasing means to release the depressed keys of all series.

'7. In a calculating machine having an accumulating pinion, a row of depressible keys, 2, movable actuator bar for operating said pinion extending along and adjacent said row of keys and controlled by the latter, pivoted locking means extending along the row of keys and engageable with the latter to hold a key in depressed position; releasing means extending transversely of the row of keys and movable substantially longitudinally to engage said locking means; actuating means connected to said releasing means and extending adjacent the path of movement of said actuator car; and means on said actuator bar engageable with said actuating means for operat ing the latter to actuate said releasing means for swinging said locking means out of engagement with a depressed key.

FRANCIS A. HOSACK. 

